48. Dredge-frame, showing the Mode of Attachment of the Bag ... ... ..: ..i 251 49. The End of the Dredge-frame, showing the Mode of Attachment of the Bag , .., 252 50. Diagram of the ■ relative Position of the Vessel, the Weights, and the Dredge, in dredging in Deep Water 253 51. Dredge with 'Hempen Tangles' 257 52. Set of Dredging Sieves 200 53. The Miller-Gasella Modification of Six's Self- register- ing Thermometer 291 54. Copper Case for protecting the Miller-Casella Ther- mometer 292 55. Serial Sounding, Station 64 312 56. Serial Sounding, Station 87 312 57. Curves constructed from Serial Soundings in the 'Warm'- and 'Gold-Areas' in the Channel between Scotland and F^eroe ... 315 58. Curves constructed from Serial and Bottom Soundings in the Channel between Scotland and Rockall 319 59. Diagram representing the Relation between Depth and Temperature off Rockall 322 60. Diagram representing the Relation between Depth and Temperature in the Atlantic Basin ... 322 61. Curves constructed from Serial and Bottom Temperature Soundings in the Atlantic Basin 324 62. Diagram representing the Relation between Depth and Temperature, from the Temperature Observations TAKEN BETWEEN CAPE FlNISTERRE AND CAPE St. VlNCENT, August 1870 327 63. " ElNE GROSSERE CyTODE VON BATHYBIUS MIT EINGEBETTETEN Coccolithen" (x. 700) ' 412 64. l CoCCOSPHERE ' (x'. 1000) 414 65. Rossella velata (sp. n.). Natural size. (No. 32, 1870) ... 419 66. Hyalonema lusitanicum, Barboza du Bocage. Half the natural size. (No. 90, 1869) 421 67. Askonkma setubalense, Kent. One-eighth the natural size. (No. 25, 1*70) 429 68. Flabellcm distinctly. Twice the natural size. (No. 28,1870) 432 6D. Tiiecopsammia socialis, Pourtales. Once and a half the natural size. (No. 57, 1 809) '■' ■"" .-. "4S3 70. Pentacrinus asteria, Limueus. One-fourth the natural size ... 436 71. TENTAcraNUS wyville-thomsoni, Jeffreys. Natural size. (No. 17. 1870) 44 ^
